ON SOUTH-AMERICAN APOCYNACEÆ. 177 
shortly and obtusely acuminate, submembranaceous, nitid and fuscous above, with pro- 
minulent nerves and transversely reticulated veins, 4-7 in. long, 2-31 in. broad, on 
petioles 6-8 lines long; panicle terminal, glabrous, many-flowered, on pedicels longer 
than the calyx; sepals broadly ovate, ciliate, 3-3 lines long ; tube of corolla 23-23 in. 
long, glabrous, cylindrical for one fourth of its length, subcampanulate above, with 
broad segments one half of its length; stamens seated on the contraction of the tube, 
included; anthers somewhat hairy, sagittate ; disk urceolate, partly cleft into 5 denticulate 
lobes, scarcely as long as the 2 cano-tomentous ovaries. 
10. ANGADENIA PRUINOSA, nob. In prov. Piauhy : v. s. in herb. Mus. Brit. Oeiras (Gardner 2232). 
An undescribed species near the preceding, with scandent, slender, flexuose, dichotomous 
branches, the axils 1-2 in. apart ; leaves ovate-elliptic, rounded at the base, with a shortish 
acute or obtusulous acumen, thinly chartaceous, with margins scarcely revolute, dark 
rubiginous green above, opake, with slender immersed nerves and delicate reticulated 
veins, puberulent beneath, griseous, finely granulate, the nerves fuscous, scarcely pro- 
minulent, 2-2] in. long, 1-14 in. broad, on slender, griseous, margined petioles 3 lines 
long; fructiferous raceme short, 9 lines long, bearing 2 follicles, horizontally divaricated, 
thickly cylindrical, 5 in. long, 6 lines thick ; seeds many, black, compressed, rostrate, 9 
lines long, 1 line broad, crowned by a white, erect, thick, pencil-like coma 21 lines long. 
The follicle and seeds exactly correspond with those of 4. hebecarpus, showing that it 
belongs to this genus. 
A drawing of this species, with its fruit and seeds, is shown in Plate XXVII. B. 
11. ANGADENIA CORIACEA, nob.: Echites coriacea, Benth. (non Blume) in Hook. Journ. Bot. iii. 249; 
A DC. 1. c. p. 467: Odontadenia coriacea, Müll. Linn. xxx. 450: O. sylvestris, Müll. (in parte) 
l. c. p. 117 (inclus. tab. 35 a. fig. 2 bis). In Guiana Brit., Pirara (Schomb. 738), Acouari (Sagot 
383) : non vidi. í 
A species, as before stated, confounded by Müller with A. sylvestris. It is a slender, 
glabrous climbing plant, resembling 4. elegans in many respects. Leaves ovate-oblong, 
obtuse at the base, shortly acüminate, glabrous, coriaceous, elegantly veined, with 
nerves little prominent; panicle ramose, on a stoutish peduncle, bearing few flowers 
laxly disposed, on stoutish pedicels; sepals obtuse; tube of corolla nearly an inch long, 
funnel-shaped above the middle. 
No dimensions are given, either of the leaves or parts of the inflorescence. 
12. ANcADENIA NITIDA, nob. : Echites nitida, Vahl, Ecl. ii. 19, Icon. tab. 13; A. DC. lc. p. 453: Odon- 
tadenia nitida, Müll. /. c. p. 118; Griseb. Fl. Brit. W. Ind. p. 416: Odontadenia cordata, A. DC. 
l. c. p. 360. In Guiana. v. s. spec. typ. in herb. Mus. Brit. Cayenne (Van Rohr). 
A climbing, glabrous species, with slender substriate branches, having their axils 
3 in. apart; leaves oblong, with parallel sides, rounded and cordate at the base, obtuse 
at the summit, with a short mucronate point, entire, submembranaceous, glabrous, nitid 
above, glauco-ferruginous beneath, with divaricate nerves and very reticulate veins, 
3-4 in. long, 1-12 in. broad, on slender petioles 4-6 lines long; raceme E , on a 
2k 
